The human brain is built for bias. To efficiently process a large amount of information quickly, the brain creates categories and ties personal associations and perceptions to those categories. This process happens subconsciously and usually without malintent.
Left unchecked, unconscious bias can have negative implications when it comes to the way companies hire. Even with the best intentions and the most experienced recruiters, unconscious bias can creep into the sourcing process, resulting in certain candidates gaining an advantage in the hiring process for the wrong reasons and thwarting opportunities for other candidates that may be the right fit for the job.